Aluminium oxide is chargeable for resistance of metallic aluminium to weathering. Metallic aluminium is extremely reactive with atmospheric oxygen, and a thin passivation layer of alumina (4 nm thickness) sorts in about 100 picoseconds on any uncovered aluminium surface area.[5] This layer guards the steel from additional oxidation. The thickness https://diamond-slurry75420.bloggosite.com/41849528/5-simple-statements-about-cerium-oxide-explained